I remember reading years ago about a family who finally took Grandma’s keys away after she asked her 16-year-old grandson to write out instructions on how to start the car and tape them on the dash.
My own grandmother, though, was the oldest licensed driver in her state at 99, and never had a wreck that I know of. She was still living alone when she had a heart attack while shoveling snow, about 6 weeks before her 100th birthday.
I understand these elderly people not wanting to lose their independence. I 100% get that - my mother would say “once you lose your ability to drive, you become dependent on other people.”